The steps-to-war theory maintains that war results from the issues under dispute and how states handle these issues. Its foundation rests on the territorial explanation of war, which argues that territorial issues are more conflict-prone than non-territorial ones because these issues constitute a salient security threat that realism recommends be addressed via power politics (i.e., the use of force, including alliance- and armament-building). When states employ power politics, however, the dispute festers, thereby causing recurring militarized conflict; creating feelings of threat, enmity, and competition (i.e., rivalry); producing counter-alliances and arms races; and generally building the more hostile, war-prone world that states originally sought to avoid. Each step taken—from a territorial dispute to rivalry (i.e., recurring militarized disputes) to alliance-building to armament building—therefore increases the probability that war will occur.
Existing empirical evidence supports the steps-to-war theory’s predictions in numerous ways. Tests of the entire theory, for example, demonstrate the dangerousness of territorial disputes, the tendency to manage territorial disputes via power politics, and that individual steps reinforce one another. Other bodies of research connect the individual steps directly to the likelihood that war will occur or highlight the connections between these individual steps—much as the theory predicts. Despite strong empirical support, however, much work remains to be done. Future research should consider the sequencing of the steps to war, investigate why the effects of certain steps vary across different epochs (e.g., alliances differ in their effects on war during the 18th and 19th centuries), identify the alternative paths to war, and study the paths to peace more explicitly—as obtaining peace may not be as simple as removing the known causes of war.
Article
The Steps to War: Theory and Evidence
Andrew P. Owsiak
Article
To Arms, To Arms: What Do We Know About Arms Races?
Richard J. Stoll
Arms races are important phenomenon They can involve the commitment of vast amounts of resources that might otherwise be used to help societies. And arms races can be a cause of war, although there is a debate on how this happens. With the arrival of the behavioral revolution in international relations, the number of quantitative studies of arms races exploded. But with the end of the Cold War, interest in studying arms races declined sharply. This is unfortunate because it is fair to say that most of the important questions involving arms races were not resolved in the empirical work that was done during the period of the Cold War.
Article
Arms Races: An Assessment of Conceptual and Theoretical Challenges
Toby J. Rider
An “arms race” is a competition over the quality or quantity of military capabilities between states in the international system. The arms race phenomenon has received considerable attention from scholars over many decades because of the ubiquity, throughout history, of states building arms as a means of deterring enemies, but disagreement persists over whether that policy is effective at avoiding war.
The Latin phrase si vis pacem, para bellum, meaning “if you want peace, prepare for war,” dates back to the Roman Empire but the sentiment is likely much older. That states should rapidly build up their militaries in the face of potential threats is a common thread that runs through much of the modern international relations scholarship influenced by realism and deterrence theory. Meeting force with force, the logic went, was the only way to ensure the security or survival of the sovereign state. These states faced a paradox, however, best articulated by the “security dilemma.” Anything a state does in the name of defense, like a rapid military buildup, decreases the security of other states and will be viewed with hostile intent. This set up a debate over competing expectations regarding the relationship between arms races and war (peace). On one hand, deterrence theory posits that rapid arming is necessary to raise the cost of an adversary attacking and, consequently, preserves peace. On the other hand, the spiral model argues that the reality of the security dilemma means that arming produces mistrust, hostility and, thus, increases the likelihood of war. Scholars set out to test these competing hypotheses using large data sets and statistical techniques, but there was widespread disagreement on how to measure arms races, appropriate research design, and the statistical findings were somewhat mixed.
Critics of this approach to studying arms races note a number of important weaknesses. First, scholars primarily focus on the consequences of arms races—whether they lead to war or peace—at the expense of understanding the causes. Those who advance this position believe that a theory of arms race onset might well inform our understanding of their consequences. Second, security dilemma, taken as the primary motivation for arms races, suffers from significant logical flaws. Third, assessment of the arms race-war relationship consists of comparative theory tests of deterrence theory and spiral model, yet these ideas are underdeveloped and expectations oversimplified. More recently, scholarship has shifted the focus from the consequences of arms races to developing theories and empirical tests of their causes. These efforts have been informed by insights from bargaining models of war, and their application to this context holds promise for better future understanding of both the causes and consequences of arms races.